Hillary Clinton 'healthy and fit to serve as president', doctor says

Hillary Clinton released new information about her health Wednesday as she recuperated from a diagnosis of "mild, non-contagious" pneumonia, with her doctor stressing she remains healthy overall and "fit to serve" as president.

Pressure had mounted for the campaign to release information about the Democratic White House nominee's medical status after she fell ill at a 9/11 memorial event on Sunday, and it was disclosed that she had pneumonia.

The former secretary of state, 68, "continues to remain healthy and fit to serve as president of the United States," her personal physician Lisa Bardack wrote in a detailed, two-page "summary update" on Clinton's health.

Clinton "is recovering well with antibiotics and rest" after being laid low by pneumonia over the weekend, when she suffered from fatigue and a low-grade fever, although her vital signs remained normal, Bardack said.